SELECT 
  c.* 
FROM 
  cscart_bm_containers as c 
WHERE 
  1 
  AND c.location_id = 20 
  AND c.company_id = 0

Query time 0.00017

Explain
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE c ref location_id,location_id_company_id,location_id_position_company_id location_id 3 const 2 Using where

Result

container_id location_id position width user_class linked_to_default status company_id
77 20 TOP_PANEL 16 top-grid Y A 0
78 20 HEADER 16 header-grid Y A 0
79 20 CONTENT 16 content-grid Y A 0
80 20 FOOTER 16 ty-footer-grid Y A 0